for every 12 people crossing the street, 7 of them used the pedestrian lane and the rest did not. if 48 people crossed the street, how many did not cross in the pedestrian lane?
7x+5x=48
x=4
5x=20
To solve this problem, we need to find the number of people who did not cross in the pedestrian lane.
We are given that for every 12 people crossing the street, 7 of them used the pedestrian lane. This means that 7 out of every 12 people used the pedestrian lane, while the rest did not.
Let's find out how many groups of 12 people can be formed from the total number of people who crossed the street: 48 people ÷ 12 people/group = 4 groups
Since there are 4 groups of 12 people, we can find the number of people who used the pedestrian lane by multiplying the number of groups by the number of people per group: 4 groups × 7 people/group = 28 people
Finally, to find the number of people who did not cross in the pedestrian lane, we subtract the number of people who used the pedestrian lane from the total number of people: Total people - People using pedestrian lane = 48 people - 28 people = 20 people
Therefore, 20 people did not cross in the pedestrian lane.